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Superlux HA3D Stereo headphone amplifier with three independent headphone feeds

Superlux HA3D Stereo headphone amplifier with three independent headphone feeds


 
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List Price: $186.80
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Product Code : HA3D
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Description
 

Superlux HA3D Stereo headphone amplifier with three independent headphone feeds


HA3D Stereo headphone amplifier with three independent headphone feeds. Superlux


The HA-3D headphone amplifier clearly was designed for the professional audio and television production crowd. It has a tank-like build quality, pro-style 1/4″ connectors, balanced line inputs, 1/4″ TRS stereo inputs and loop outs. The dimension of the amp is fairly big by today’s standard of RSA-Shadow and Pico-Slim sized amps. You certainly won’t be taking HA-3D amp during day to day activities. Despite the “professional irregularities”, the HA-3D amplifier offers quite some interesting features that makes us decide it’s worth writing an article on.

The first and most striking feature is how the amplifier is able to drive three headphones simultaneously, while offering individual volume control for each headphone! Yes, three separate, isolated headphone amplifier circuits in one box!
It’s not something that the average people would need everyday, and yet, it still is highly fascinating because now you’re suddenly able to burn three headphones simultaneously without much problems.
Or, you can share your music with friends without having to fight over the volume control.
Or, being the headphone addicts that we are, you may want to A-B headphones and the HA-3D will let you A-B-C headphones and volume-matching the three headphones easily.

Considering that the HA-3D runs only on two AA batteries, it’s pretty surprising how the amplifier is able to drive full size headphones simultaneously without breaking a sweat.
The amplifier circuitry runs on +-15V, and it’s quite potent to drive big full size headphones to ear-shattering levels.
I’m talking headphones like the Sennheiser HD600, HD650, HD800, and the LCD-2 grade here, not some easy to drive Audio Technicas.
Yes, three big full size headphones running on full volume with only two AA batteries!

  • This amp wowed everyone during our last local gathering, as everybody was happily listening to three headphones simultaneously blasting music from the same source.
  • The only headphone that I’ve found the HA-3D to be incapable of driving properly is the Hifiman HE-6 (and perhaps the HE-5 variants as well), but the LCD-2 is quite a light drive for the HA-3D (9-10 O’clock with the LCD-2). Superlux claims 8 hours of battery life out of the 2x AA internal batteries.
  • Nothing grand there, but what can you expect from 2x AA batteries?
  • At least I can see that they’re aiming for easy availability of batteries when people are using it for on-location production sessions.
  • If you have AC power available, the HA-3D also takes an external power supply in the range of 5V to 17V. I wonder if you can make it run on USB power with the cable.


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